Brent Clark <bclark@???> wrote: > Hi all
>
> I would like to ask you guys if you can help me with this fetchmail
> problem.
>
> I have setup fetchmail to fetch a multidrop account, Exim is setup to
> reject all unknow users. Error 550.
>
> When fetchmail fetch the mail I can see it reject unknow e-mail with
> error 550 and flush the mail, but know it does not send out a notice
> to
> the sender.
This is one of the many drawbacks you get with the fetchmail model. The only
thing you can do is accept-then-bounce - adjust your Exim config to stop
doing recipient verification at SMTP time. Then it will originate an
outbound NDR for undeliverables.
BUT - this is very undesirable. You will inevitably end up sending
unnecessary (and some consider abusive) NDRs in response to worms and
viruses which have forged sender addresses. Your Exim queue will fill up
with undeliverable bounces, some of which will freeze on the queue and need
special handling.
There's no really good way of fixing the situation you're in, other than try
to move away from the fetchmail model, which is a kludge at best.
